Don't make F_None the default.

This will make it easier to switch the default to being binary files.

llvm-svn: 202042
diff --git a/llvm/lib/IR/Core.cpp b/llvm/lib/IR/Core.cpp
index 3a6a0b0..dbaf02e 100644
--- a/llvm/lib/IR/Core.cpp
+++ b/llvm/lib/IR/Core.cpp
@@ -130,7 +130,7 @@
 LLVMBool LLVMPrintModuleToFile(LLVMModuleRef M, const char *Filename,
                                char **ErrorMessage) {
   std::string error;
-  raw_fd_ostream dest(Filename, error);
+  raw_fd_ostream dest(Filename, error, sys::fs::F_None);
   if (!error.empty()) {
     *ErrorMessage = strdup(error.c_str());
     return true;